RK 530Dr Drag Chain RK 530Dr Drag Chain is the ultimate lightweight racing chain. Weighing 4.96 lbs per 100 links making it lighter than most 530 sealed chains. Features: Tensile Strength: 10,400 lbs Max CC Rating: 1,500 Drag Max Horsepower: 250 Master Link Type Included: Clip Note: DR is a Drag Racing specific chain and is not suitable for street use.